What is a single word for feeling both happy and sad?

 Unfortunately, there isn't a single, perfect word in English that captures the exact feeling of being both happy and sad simultaneously. However, depending on the specific nuances of the emotion you're trying to convey, here are some options that come close:

• Bittersweet: This is the most common word used to describe a feeling that is both pleasurable and sorrowful. It acknowledges the presence of both positive and negative emotions.
• Melancholy: This word implies a gentle sadness mixed with a sense of longing or contemplation. It can sometimes capture a bittersweet feeling, but it leans more towards the sadness side.
• Wistful: This word suggests a yearning or a longing for something that is gone or unattainable. It can be mixed with happiness at the memory of what was, but it still emphasizes the lack or loss.
• Saudade: This Portuguese word has no direct English translation, but it describes a deep emotional state of nostalgic or profound melancholic longing for an absent something or someone that one loves.
• Ambivalent: While not directly expressing happiness and sadness together, it signifies having mixed feelings about something, which can encompass both positive and negative emotions simultaneously.

Ultimately, the best word to use depends on the specific context and the exact blend of emotions you want to express. Consider the intensity of each emotion, the reason for experiencing both happiness and sadness, and the overall tone you want to convey when choosing your word.